For many of us, models don't last long enough to show this...
Mine do, probably due to long times between flying occasions, and fewer flights, total. My Allen Aldrich 1/2A Envoy, some may have seen, is over 20 years old. No puckered LE sheeting, (no LE sheeting!) or 'starved wing ribs', but the fuselage sides are now concave by about 3/32" in around 1 1/4" height. The upper decking -curved soft sheet- is not puckered.
Don Holllfelder's WAM Rules-inspired .15 stunter. Sirocco (misspelled Sirorcco on the mag plans) used a nice trick - not for this purpose, but for strength.
Flat, soft sheet is easily deformed. - But, curved to a 'sorta-tubular' form, such soft flat sheet is mechanically stronger, and the curve will also likely prevent - or reduce- the effects of different dope shrinkage between the inner (undoped) and the outer (doped) surfaces.
The curvature's improvement in strength might allow us to use thinner or softer balsa for things like sheet fuse sides. With the reduced availability of good balsa, this might be a way to use what is available. It doesn't take much curvature. Test this with a 3X5 card? Try to stand it on edge. Ha! Roll a curve across it and if it's enough, it WILL stand on edge.